Extending VLAN 10 Across Two Switches (802.1Q)

Bundle lab · $29.99

Build and verify an 802.1Q trunk between two access switches that cleanly transports VLAN 10 end-to-end while intentionally pruning VLAN 20. You will configure access ports, create VLANs, set a hardened dot1Q trunk with a non-default native VLAN, and validate host reachability and isolation from endpoints.

Learning objectives

• Create VLANs and assign switch access ports to the correct VLAN
• Configure and harden an 802.1Q trunk with an explicit allowed VLAN list and a non-default native VLAN
• Verify correct VLAN transport over the trunk and isolation for pruned VLANs
• Validate host-to-host connectivity within VLAN 10 across two switches from real endpoints
• Troubleshoot native VLAN mismatches, allowed-VLAN pruning errors, and host-to-port/VLAN misassignments

Troubleshooting focus

• Verify every link's interface status and IP addressing (`show ip interface brief`) and correct any interface that is down or misaddressed.
• Confirm each device's running configuration matches the lab objective, and bring any interface, route, or service that is not in its expected state back to health.
• Trace end-to-end reachability with ping/traceroute and isolate the first hop where forwarding fails.